Reorganisation of the source tree

Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.

The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level.  The build system now makes no
pretense at being multi-project, it is just the GHC build system.

No doubt this will break many things, and there will be a period of
instability while we fix the dependencies.  A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.

2 files changed, 83 insertions, 0 deletions

diff --git a/utils/touchy/Makefile b/utils/touchy/Makefile
new file mode 100644
index 0000000000..d2430df162
--- /dev/null
+++ b/utils/touchy/Makefile
@@ -0,0 +1,20 @@
+#
+# Substitute for 'touch' on win32 platforms (without an Unix toolset installed).
+#
+TOP=../..
+include $(TOP)/mk/boilerplate.mk
+
+C_SRCS=touchy.c
+C_PROG=touchy
+SRC_CC_OPTS += -O
+
+#
+# Install touchy in lib/.*
+#
+INSTALL_LIBEXECS += $(C_PROG)
+
+include $(TOP)/mk/target.mk
+
+# Get it over with!
+boot :: all
+
diff --git a/utils/touchy/touchy.c b/utils/touchy/touchy.c
new file mode 100644
index 0000000000..90fb31e93e
--- /dev/null
+++ b/utils/touchy/touchy.c
@@ -0,0 +1,63 @@
+/*
+ * Simple _utime() wrapper for setting the mod. time on files
+ * to the current system time.
+ *
+ */
+#if !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(_WIN32)
+#error "Win32-only, the platform you're using is supposed to have 'touch' already."
+#else
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <errno.h>
+
+int
+main(int argc, char** argv)
+{
+  int rc;
+  int i=0;
+  int fd;
+  int wBitSet = 0;
+  struct _stat sb;
+
+  if (argc == 1) {
+    fprintf(stderr, "Usage: %s <files>\n", argv[0]);
+    return 1;
+  }
+  
+  
+  while (i++ < (argc-1)) {
+    if ( (_access(argv[i], 00) < 0) && (errno == ENOENT || errno == EACCES) ) {
+       /* File doesn't exist, try creating it. */
+      if ( (fd = _open(argv[i], _O_CREAT | _O_EXCL | _O_TRUNC, _S_IREAD | _S_IWRITE)) < 0 ) {
+      	fprintf(stderr, "Unable to create %s, skipping.\n", argv[i]);
+      } else {
+      	_close(fd);
+      }
+    }
+    if ( (_access(argv[i], 02)) < 0 ) {
+    	/* No write permission, try setting it first. */
+	if (_stat(argv[i], &sb) < 0) {
+	   fprintf(stderr, "Unable to change mod. time for %s  (%d)\n", argv[i], errno);
+	   continue;
+	}
+	if (_chmod(argv[i], (sb.st_mode & _S_IREAD) | _S_IWRITE) < 0) {
+	   fprintf(stderr, "Unable to change mod. time for %s  (%d)\n", argv[i], errno);
+	   continue;
+	}
+	wBitSet = 1;
+    }
+    if ( (rc = _utime(argv[i],NULL)) < 0) {
+      fprintf(stderr, "Unable to change mod. time for %s  (%d)\n", argv[i], errno);
+    }
+    if (wBitSet) {
+	/* Turn the file back into a read-only file */
+   	_chmod(argv[i], (sb.st_mode & _S_IREAD));
+	wBitSet = 0;
+    }
+  }
+  
+  return 0;
+}
+#endif